I found the following piece of information on Roy's blog very interesting: http://yrn.me/0jgb5.
Some part of it are reproduced below.
The news first broke on Twitter @TechLoy that a cool blackberry app for the Nigerian constitution has been released and available for free download. Developed by a Nigerian web (now mobile apps) developer @zubairabubakar, the Nigerian constitution on Blackberry is the first of its kind in Nigeria. When Abubakar gave me the hint last year that he was working on a blackberry app for the Nigerian constitution, I couldn’t wait to get my hands on the app. Within 100 minutes of the release of the app, it was downloaded 300 times and in 3 hours had seen 500 downloads. In 4 hours, it had done 1000 downloads. After 18 hours, the app had seen 5000 downloads. Truly, “value brings numbers”, as @gbengasesan said. On 16th January at 10:30am (GMT+1) – just a few minutes ago – the app hit 10,000 downloads in less than 72 hours it was released. If sold at 100 naira per download, the app would have grossed N1,000,000 in revenues within 3 days. That gives a glimpse of how much local mobile apps developers can make off their own apps.
